Abstract: A tennis score keeper and display device includes an elongated support pole, a pair of attachment brackets mounted at locations spaced from one another along the support pole and being adapted to secure the support pole to and alongside a tennis net support post, and a score display mast mounted to an upper end of the support pole. The mast has a pair of opposite vertical end portions and a pair of opposite vertical side portions extending between and interconnecting the opposite end portions. A row of vertically spaced numbers are defined on each of the opposite vertical side portions of the score display mast. A row of vertically spaced pockets are defined on each of the opposite vertical end portions of the score display mast.